Type writing machine



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V M.-GOHN. TYPE WRITING M-AGHINE.

No. 432,982. Patented July 29,1890.

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TYPE WRITING MACHINE.

No. 432,982. Y Patented July 29, 1890.

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UNITED STATES PATENT OFFICE.

MAX COHN, OF MILNVAUKEE, \VISCONSIN, ASSIGNOR 0F ONE-THIRD TO CHARLES COIIN, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 432,982, dated Jul 29, 1890.

Application filed July 1,1889 serial No. 316,200. (No model.)

To all whom it may concern.-

Be it known that 1, MAX COHN, of Milwaukee, in the county of Milwaukee and in the State of \Visconsin, have invented certain new and useful Improvements in Type-\Vriting Machines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to type-Writing machines; and it consists in certain peculiarities of construction and combination of parts, to be hereinafterdescribed with reference to the accompanying drawings, and subsequently claimed,

In the drawings, Figure '1 represents a plan view, partly in horizontal section, and illustrates a spring-controlled frame trunnioned to standards, index-plate, type-wheel, and ribbonavinding mechanism carriedby the frame, and the means for actuating the type-wheel; Fig. 2, a plan view illustratingthe base of the machine, an intermittently-actuated papercarriage arranged to travel thereon, a stop for the type-wheel, and an alarm mechanism; Fig. 3, a front elevation of the machine with parts broken away; Fig. 4, an end view of the machine partly in v'erticaltransverse section,-designed to illustrate a copyholder se cured to a standard on the base, the connection between the paper-carriage-actuating lever and type-wheel shaft, the mechanism for shifting and stopping the type-wheel, a spring-controlled shield that depends from the printing-frame, and an anvil that receives the impact of the type 5 Fig. 5, a vertical transverse section that more particularly illustrates certain details of construction in connection with the paper-carriage, ribbonwinding mechanism, and alarm; Fig. 6, an elevation of one end of the paper-carriage; Fig. 7, a vertical transverse section of the anvil; Fig. 8, a detail view illustrating a spring-controlled shield that constitutes part of my invention; Fig. 9, a detail view illustrating a sheave on the spring-controlled shaft of the type-wheel and a guide for the cord connecting the sheave with a bell-crank lever, and Fig. 10 a detail section of a portion of the inking mechanism. v

Referring by letter to the drawings, A represents the base of .my type-writer, having its 'ment with a lug 7r, projecting from a longirearcorners provided with standards a, that serve as bearings for trunnions b of a rootangular racking-frame B, having its end pieces engaged by the slotted upper ends of posts 0, that extend from the base adjacent to the standards, and arranged on these posts to impinge against said ends of the frame arespiral springs d, that support said frame and automatically return the same to its normal position after a depression by the operator, pins '6 being passed through the upper ends of the posts to serve as stops for limiting the upward movement of the frame.

The sides of the frame B are centrally provided with bearings for a transverse shaft 0, having a spiral spring farranged thereon and fastened at one end thereto, the free end of this spring being passed under a bracket g, that extends inward from the adjacent side of said frame and is provided with stops for a lever D, that is pivoted to said side of the frame and provided with a pin 72., for engagement with an annular groove i in the hub j of a type-wheel E, the latter being splined to said shaft and shifted thereon by said lever. The hub j of the type-wheel extends outward for a certain distance and carries a toothed wheel F, that conies in and out of engage tudinal rail G, that'is secured at its ends to the outer end of two parallel tracks H for .a paper-carriage I, the latter being hereinafter more particularly described. The toothed wheel F engages the lug is every timethe frame B is depressed, and this construction and arrai'igement of parts prevents vibration of .the type-wheel E, whereby any selected character thereon will strike the true print-v ing-point, perfect spacing being the result.

The type are preferably formed on'strips m, of "any suitable material, and these strips are designed to be detachably connected to the wheel E by any suitable means, whereby. different sets of characters may be interchangeablyemployed in connection with the machine or worn-out type readily replaced, or a series of type-wheels may accompany the machine, one being substituted for another, as occasion requires. As shown, the type on. the wheel E are arranged in; three parallel rows and are relative to the spaces between TOQ the teeth on the wheel F, either row typebeing brought into register with the printingpointby meansof the lever D, above described.

Detachably secured to one corner of the frame 13 is a segmental index-plate J, pro vided with a row of indentations corresponding to the type on wheel E, each of these in-- dentations beingindicated by characters that denote the corresponding characters on said wheel, and in case the type-strips or wheel be changed to present a different seriesof characters a corresponding index-plate would be substituted for the one now employed.

Pivotally connected to the center point of the segmental index-plate is a bell-crank lever K, provided wit-h a lug n, for engagement with the indentations on said index-plate, the inner end of this lever being connected by a cord 0 with a sheave L, fast on the shaft G,

whereby a movement of the lever will rotate saidshaft, and thus bring the desired character on the type-wheel in register with the printing-point. The spring f on the shaft 0 contracts in opposition to the pull of the le; ver K, and on the release of'this lever the parts actuated thereby are returned to their normal position by the expansive force of said spring. i

In order to take up slack in the cord 0, the lever K is provided with a bearing fora screw 1), to which one end of said cord is secured, and arranged on this screw are set-nuts q, this construction being illustrated in Fig. 1.

Attached tothe rear side of the frame 13 is a bracket 7, that carries parallel rollers s, that serve as a guide for the cord 0, and in order to prevent the latter from slipping off the sheave L a guard 25 is also connected to said side of the frame. V

Depending from the front side of the frame B is. a bracket M, provided with a guide it, for the spring-controlled vertical shank of a horizontal shield N, that comes under the type-wheel E, and is provided with an opening e, that registers with the printing-point, said shield being held against rotation by means of a lug w on its vertical shank, being in engagement with a slottc on said guide. (See Fig. 8.) Other bracket-s also depend from the front side of the frame '13, and these brackets are provided with bearings 'y, for the spindles of detachable ribbon-spools O, and

bearings a, for a longitudinal shaft P,.arranged at right angles to said spools and extended through one end of the frame B.

Splined on the outerend of the shaft P is a ratchet-wheel Q, provided with an an nularlygrooved hub that engages with lug a on the adjacent end of the frame 13, the latter being provided with a stud b,'on which is arranged a detent c, for engagement with said ratchet-wheel. The shaft P is loose in its. bearings and carries pinions (1, arranged in pairs and so spaced that one pinion in each pair will engage a pinion on thespindle of the adjacent ribbon-spool, whereby the ribbon R, arranged in guides R, will be running crooked. v A shaft J is supported in arms-t at the wound from one spool to other in either direction, accordingly as said shaft is moved in or out in its hearings to bring one or the other of the pinions in each pair in mesh with the 1 pinions on the spool-spindles, intermittent rotation being imparted to the shaft by means of a springspawl S on the base A, arranged to actuate the ratchet-wheel Q every time the frame B is depressed said pawl being best illustrated in Fig. 5. The type on the wheel E impact against an anvil T, having a screwthreaded stem 6, that passes through a brace f in a-hollow standardll onthe base A, and the anvil is vertically adjusted by means of set-nuts g, arranged on its stem to come upon opposite' sides of said brace, as illustrated in Fig. 7. By adjusting the anvil T the pressure of the type is readily regulated to attain good impression, especially when the machine is employed for manifold work.

The paper-carriage I is provided with rollers 1.,that travel on the tracks H, and fast to its rearside beneath this carriage is a rack i, for engagement with a pinion j on a shaft V, that has its hearings in the adjacent end of said tracks, and on the base A, as is best illustrated in Fig. The shaft V is'also provided with a ratchet-wheel WV, that engages a spring-pawl X, pivoted to a bifurcated link Y, loose on said shaft, and pivoted in turn to i a lever Z, fulcrumed on. a stud k, that proj ects from the adjacent one of the tracks H,

this lever being connected by means of a link A with an end of the frame B,-whereby each time the latter is actuated the carriage is moved a short distance in a forward directionnvhereby the spacingof the printed characters is attained.

The base A is provided with adetachable standard -13, provided at its upper end with a pulley m, and arranged to slide on this standard is a weight C, attached to the carriage I i by means of a cord 71., passed over the pulley m, and another pulley 0 on a bracket 29, at-

tached to the base of the machine, said weight serving to take up lost motioirbetween the' rack and pinion-gear when the carriage is moved forward, as above described.

A spring-controlled detent D is pivotedto a stud g on the rear one-of the tracks H, to engage the ratchet-wheel W, andabail r on the spring-pawl X straddles the detent, the

latter and said pawl being raised out of engagement with said ratchet-wheel by means of a lever E, fulcrumed'to the adjacent one of the tracks H, and provided with a lug s, that comes under said detent. Then "the detent and pawl are brought out of engagement with the ratchet-wheel, the carriage can be adjusted on its tracks.

Journaled in bearings on the carriage are parallel rolls F G, for feeding the paper, and a graduated scale H issup'ported above the roll F by means of brackets I, the latter serving also as guides to prevent the paper other gear-wheel Q on the shaft J.

front of the carriage, and splined on this shaft are guide-rolls K for the paper.

The shaft of feed-roller F is provided with a gear-wheel L, having a crank M, and arranged on said shaft is a notched wheel N, for engagement with a spring-detent O, as best illustrated in Fig. 6. The gear-wheel L meshes with an idler P on a stud 'zt,projecting from the adjacent end of the carriage,- and this idler communicates motion to an- B y actuating the gear-wheel L the line-spacing is effected.

The opposite end of the carriage is provided with a barbed finger R that actuates a spring-controlled hammer pivoted to an arm 0' of a post S on the base A, and said post supports a bell T, designed to be struck by therecoil or the hammer when the barb on the finger passes out of contact with the pivoted foot-piece w of said hammer. When the carriage is drawn back, the pivoted footpiece 10 of the hammer yields to the pressure of the barb on the finger R and thus no resistance is ofiered to the movement.

One ofthe standards a on the base A is provided with a socket as for the standard y of a detachable spring-clip U, the latter being of ordinary construction and serving as a copy-holder.

In .a former application, Serial No. 281,090, filed July 26, 1888, I have shown a trunnioned frame provided with bearings for a springcontrolled shaft that carries atype-wheel'and sheave, the latter being flexibly connected to a bell-crank lever that is pivotally united to a segmental index-plate, and in the same application I show a paper-carriage provided with a rack engaged by a pinion o'n a shaft having stationary bearings, this shaft being provided with a ratchet-wheel that engages a spring-pawl pivoted to abifurcated link loose on said shaft and pivoted in turn to a lever fulcrumed on a stationary stud, this lever being linked toan end of the type-wheel frame, whereby each time the latter is actuated the paper-carriage is moved a short distance ina forward direction to space the printed characters, lost motion being taken up by a weight flexibly connected to said paper-carriage. A detent is also engaged by the ratchet-wheel,-

and a bail or loop on the spring-pawl straddles the detent, the latter and said springpawl being raised out of engagement with said ratchet-Wheel byalever mechanism when it is desirable to adjust the paper-carriage on its track or to return said paper-carriage to its normal position.

Having thus.described my invention, what I claim as new, and desire to secure by Letters Patent,is p

1. In a type-writer, the combination of a trunnioned frame, ribbon-spools having spindles arranged in hearings ,on the frame and provided with pinions, a longitudinally-adjustable shaft having its bearings in said frame and provided with pinions arranged to .come in and out of mesh with those on the spool-spindles, a-ratGhet-wheel splined on the shaft, and a pawl arranged in the descending path of the ratchet-wheel, substantially as set forth.

2. In a type-writer, the combination, with ribbon-spools having spindles provided with pinions, of a longitudinally-adjustable shaft carrying'pinions arranged in pairs and so spacedthat one pinion in each pair will engage the'pin' ion on" the adjacent spool-spindle accordingly as the shaft is adjusted in either direction, anda pawl-andsratchet mechanism for intermittent-1y actuating said shaft, substantially as set forth.

3. In a type-writer, the combination of a frame, a rotary adjustable; shaft having its hearings on the frame, a spiral spring arranged on the shaft and fastened at one end thereto, a bracket on said frame arranged to extend over the free end of the spring, a

wheel splined on said shaft and provided with type-characters arranged in parallel circles, a lever connecting said frame with-the wheel, and stops for the lever, substantially as set forth.

4. 'In a type-writer, the combination of a frame, a rotary adjustable shaft having its bearings outhe frame, a spiral spring arranged on the shaft and fastened at one end thereto, a bracket on said frame arranged to extend over the free end of the spring, atypewheel splined on said shaft and having an annular groove in its hub, a lever having a pin engaged with'said groove, and stops for the lever, substantially as set forth.

5. In a typewriter, the combination of a trunnioned frame, a rotary adjustable typewheel carried by the frame, a bracket depending from the frame, a shield having an open ing therein to register with the'printing-point, and a spring-controlled shank on the-shield connectedto the bracket, substantially as set forth.

6. In a type-writer, the combination of a trunnioned frame, a springadjustable type-whecl having its shaft arranged in bearings on the frame, a bracket depending from said frame and provided with a slotted guide, a spring-controlled shank arranged in the-guide and provided with a lug to engage the slotted portion thereof,ashield carried by the shank to come under the typewheel, and an openingin the shield arranged controlled rotary, 1

to register with .the. printing-point, substantially as set forth.

7. In a type-writer, the combination, with an impacting mechanism, of a hollow standard internally provided with a brace, a screw passed through the brace, nuts engaging the screw on'opposite sides of saidbrace, and an anvil cord connecting the sheave and take-up mechanism, substantially as set forth.

9. In a type-Writer, the combination of a spring-controlled shaft carrying atype-Wheel and sheave-a segmental index-plate, a bellorank lever pivoted to the index-plate, a bearin g on the lever, ascrew arranged in the hearing, nn'tsarranged 011 the screw at opposite ends of said bearing, and a cord connecting said screw and sheave, substantially as set forth. r

10. In a type-Writer, the combination of a spring-controlled shaft carrying a type-wheel and sheave, a segmental index-plate, a'bellcrank lever pivoted to the index-plate, a cord connecting the lever and sheave, and a guide for the cord, substantially as set forth.

#11. In a type-writer, the combination of a spring-controlled shaft carrying a type-wheel and sheave, a segmental index-plate, a bellcrank lever pivoted to the index-plate, a cord connecting the sheave and lever, anda guard arranged to prevent the disengagement of said cord and sheave, substantially as set forth.

12. In a type-writer, the combination of a reciprocating paper-carriage, a pair of feed rollers mounted on the carriage, a crank-actn ated gear-wheel carried by one of the rollers,

an idler arranged to mesh with the gear-wheel,.

a shaft having its bearings on said carriage,

a gear-Wheel carried'by the shaft to-inesh with r the idler, and guide-rolls splined on said shaft,

substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

the county of Milwaukee and State of Visconsin, in the presence of two Witnesses.

MAX COHN.

Witnesses:

Y N. E. OLIPHANT,

JOSEPH Gnoss. 

